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Product Summary

283, 305, 307, 327, 350, 400, 1000-5000 RPM Range

    Key Specs

    Camshaft TypeHydraulic Flat Tappet
    RPM Range1000-5000
    Intake Duration (.050" Lift)206
    Exhaust Duration (.050" Lift)212
    Lobe Separation112 °

    Need To Know

    This Product Will Ship Free

    Shipping Policies & FAQs

    Quick and Easy Returns

    Return Policy

    COMP Cams 12-249-4 Details

    COMP Cams Xtreme Energy Computer Controlled XE249H-12 Camshaft for Small Block Chevy.

    Chevrolet 262-400 c.i. 8 cyl. 1958-1998. For '58-'98 262-400 cid Small Block Engines w/ Flat Tappet Cam - Great In Throttle Body, Crossfire or Carbureted Engine & 305 TPI. Xtreme Energy. Hydraulic - Xtreme Energy Computer Controlled: Great in throttle body, crossfire or carbureted engine and 305 TPI.

    • Quicker opening lobe profiles deliver increased responsiveness & more area under the lift curve
    • More vacuum allows an increase in duration for improved performance & assists power brakes
    • Excellent performance in street carbureted applications
    • Best performance with aftermarket intake manifolds, headers, lower gear ratios, etc.

    Application

    1987 Pontiac 305
    1967-86 GMC 283-400
    1987-97 Chevy 305-350

    CARB Warning

    For race/ off road use only

    Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

    COMP Cams 12-249-4 Specifications

    KEY SPECS
    MFG. Part #12-249-4
    BrandCOMP Cams
    Camshaft TypeHydraulic Flat Tappet
    RPM Range1000-5000
    Intake Duration (.050" Lift)206
    Exhaust Duration (.050" Lift)212
    Lobe Separation112 °
    GENERAL
    Intake Valve Lift w/ Rocker Arm Ratio0.434"
    Exhaust Valve Lift w/ Rocker Arm Ratio0.444"
    Intake Duration249
    Exhaust Duration260
    Sold in QuantityEach
    Grind NumberCS XE249H-12
    GTIN Code036584063261
    External Ignition Box RequiredYes
    Valve Springs RequiredYes